Car audio analysis tools.

Now you can test your automobile sound system audio using a professionally-designed test and measurement app.

The free app includes ad-supported, limited-feature versions of our professional-quality SPL meter, RTA, FFT Analyzer, and Polarity Tester. Upgrade with the AudioControl SA4100i test and measurement microphone and everything is free! All of the modules are automatically unlocked as soon as you plug in the microphone.

You can also buy any of the modules as ad-free and full featured, even if you don't use our microphone.

Using just the built in iOS device microphone, you can test things like frequemcy response, speaker driver polarity, SPL level, and more.

Adjust your sound system equalizer by sending pink noise to your system, measuring the frequency response with the RTA (Real Time Analyzer) or the FFT Analyzer. Try to get the flattest response, with a slight (or huge!) low end boost.

What’s New

Version 3.0

-Fixed iCloud support
-Fixed in-app purchase detection
-Improved Reference Curve file handling
-Added folder support for iTunes, local, and iCloud
-Bug fixes and stability improvements

Ratings and Reviews

3.6 out of 5
13 Ratings

13 Ratings

Arky in Boca Raton ,

Not Presently Compatible with IOS 12 (betas)

Crashes immediately. Downgraded to IOS11.4.1 worked fine. Don’t waste your time on the betas; if you are using this software.

Grumble Stiltskin ,

It's now a pain to use!

*The latest update appears the have corrected the issues. My review score has been updated to reflect that.*
After updating the app I periodically can not use the tone generator or other functions without connecting my SA-4140i SPL mic. The app prompts me to buy the additional functionality for various sums of money. I ALREADY BOUGHT THE $270 HARDWARE and do not appreciate being prompted to spend more money for functionally I have already paid for.

Sharisa Giller ,

Expand your keywords all top3!provide 5-star rating&review and developer account!

Engaging in Appstore Optimization over 5 years!Visit us on: upmobi,you can also follow us on SKYPE: Apple Master ( live:.cid.6306bf897c7485a7 )!Provide rating/review/keyword installs for all areas on AppStore&PlayStore! Get a free promotion right now!

App Privacy

The developer, AudioControl, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer's privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


60.1 MB

Requires iOS 11.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, French, German, Japanese, Polish, Simplified Chinese, Swedish

Age Rating
In-App Purchases
  1. RTA Full Features $4.99
  2. SPL Pro $4.99
  3. FFT Full Features $8.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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